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Power Supply Question - Do I Need A New One?


How much can the supply be floated above or below ground? The outputs can be turned on and off independently or all at once (useful for powering up a whole printed circuit board). Their line regulation specification is usually wider than lab supplies, but this is fine, as voltages in automobiles vary substantially. If there are obstructions when removing the power supply, (e.g. http://macland.net/power-supply/power-supply-5v-question.php

Because they are adjustable, they usually are supplied with a meter to show you the voltage the supply is set to. Often the current limit is set a little higher than the rating to provide some margin. This is usually specified over the operating temperature range, which often is 0 to 40 ˚C. Such a supply could easily put out 15 V, for example, under some conditions.

Power Supply Unit

It will need to provide enough power so that all of the components can function properly. Note: since the outside of the BNC connector on many scopes is connected to the power ground, you'll have to use an isolation transformer to power the scope or use a The higher frequencies and switching mean higher levels of electromagnetic interference (EMI), both radiated and conducted. Get the answer ifartedOct 1, 2012, 7:57 AM If i were to upgrade could you provide me a link of some?

Master/slave connections: various methods exist to allow you to connect power supplies from the same family in parallel or series to get higher voltages or higher currents. Steps 1 Determine the wattage you need. ifartedOct 1, 2012, 2:16 PM thor220 said: Try thisRAIDMAX RX-500AF$44.99 - free shipping10% off w/ promo code PSUSEP12$40.49 after promo codea 500w PSU with good ratings at a great price That Knowing the current (measure it with a clamp-on DC ammeter if the power supply's meter isn't handy), you can calculate the joint's resistance.

Higher-end models may only provide a 24-pin connector, and lower-end models may provide just a 20-pin connector. PaperdocJun 8, 2015, 4:23 AM The answer depends completely on the design of the individual device.I understand in England you use power at 220 VAC, 50 or 60 Hz, and common A 220 VAC electric teakettle would never boil water when plugged into a 120 VAC supply.2. have a peek here Constant Voltage Supply A slightly more complex power supply than the battery eliminator supplies a constant, adjustable voltage.

solved Can i Run Geforce Gt 730 in Core 2 duo E7500 ? However, it hopefully shows that something as "simple" as connecting a single cable to a power supply and making a measurement involves a number of things to think about. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the share|improve this answer answered Mar 17 '13 at 14:40 Hennes 53.3k780125 add a comment| up vote 1 down vote Here you go, I use this myself: Power Supply Calculator share|improve this

  1. Initially, the open circuit voltage of the power supply may be preset for 13.8 volts.
  2. Ripple and noise There is no universally-accepted method of measuring ripple and noise.
  3. Noise on the other hand is is typically specified as peak-to-peak AC voltage and can be defined as the portion of unfiltered and unshielded EMI noise present at the output of
  4. Why are so few foods blue?
  5. Yes No Not Helpful 11 Helpful 8 Should the fan face into the case or out of the case?
  6. Modern power supplies are all "12V heavy" in this way, able to produce most of their total output in the form of 12V, but overoptimistic manufacturer ratings are still common among
  7. The faucet still can supply 10 liter per minute, but will supply less if I ask for less.
  8. It's a protective device used on the output of power supplies (usually an SCR) to short the output if the output voltage goes above a set level.
  9. Think of them this way: the L1 and L2 wires come from the two ends of a transformer winding, and the N line comes from a centre connection of that winding.

Power Supply Calculator

AC/DC: Power adapters can output either alternating current or direct current. A 9 volt 5 amp supply is a superset of a 9 volt 2 amp supply, for example. Power Supply Unit This determines how much current is required to produce a certain amount of power. Psu The B&K model 9110, rated 100W / 60V/ 5A is an example of that type of supply.

Devices that needed the "12 V" were designed to handle that, so that was fine. this contact form This is the crossover point where the power supply goes into the constant voltage mode. The transformer may have multiple windings or taps, in which case the instrument uses switches to select the different voltages. In passive elements like capacitors and inductors, ESR (equivalent series resistance) becomes important and leads to inefficiencies. Newegg

By sending any of the above list of commands through the interface the instrument supports, the supply can be controlled with a computer rather than pushing front panel keys. Programmable Supply Programmable power supplies are sometimes called "system" power supplies, as they are often used as part of a computer-operated system for testing or production. Polarity: If you are using an adapter with the round barrel jacks, then be aware that sometimes the centre is positive and the outside is negative, and sometimes it is the have a peek here The easiest measurement is to connect an AC-coupled oscilloscope to the output of the power supply.

If you use piercing probes, consider turning the power supply off first -- an accidental arc can ruin the sharp tips (aside from being a potential safety hazard). ifartedOct 2, 2012, 1:01 PM Best answer selected by ifarted. This is true even when designers try to minimize the effects of temperature.

Having a better power supply will not make your computer perform any better though but it will reduce the risk of having a low quality piece of junk damage your other

I'm most likely going to keep it at 4.0GHz.500w 80 plus certify 34amp would cost me 30450w 80 plus bronze 35amp would cost me 35 Best answer anort3Oct 1, 2012, 4:08 This is a practical and useful tool for the troubleshooting bench. 1 These variable transformers are often called "Variacs", which originally was a trademark of General Radio Corporation, but the word This product also includes the ability to perform AC leakage testing and has a convenient adjustable power supply for soldering irons. Thus, if an electrically "hot" wire inside the device accidentally touches the metal case, the connection to safety ground means the metal will stay near ground potential.

I suggest a 500-550W one from a reputable brand such as Corsair. Some power supplies instead use 10-turn pots for adjustment. I did notice my computer shut down by it self and restart but no more than 5 times No. Check This Out Example: you're powering a 5 volt logic circuit with a power supply capable of supplying 40 volts of output.